Meetinghouse Webcast App on Chromecast with GoogleTV

Has anyone tried using this app (https://www.churchofjesuschrist.org/hel ... ebcast-app) on a Chromecast with GoogleTV? I tried it this evening with our stake conference broadcast. The device registered just fine. I could see it on the broadcast portal. I could see the broadcasts on the app on the TV. But when I clicked the Watch button a black screen with a small 0% at the bottom would appear and then nothing more would happen. At the same time I was streaming on another device on another network so I know the stream was working.

Anyone have debugging suggestions?

Have tested and am able to verify the same issue as yours on two different devices in two different networks.

Is it happening on all Android TV devices, or just Google TV?
I'd definitely recommend sending feedback. I guess you could try testing again in the middle of the week, just in case a server was down over the weekend...

I have an NVidia Shield that I use every Sunday to watch Sacrament Meeting without issue

Yes, it looks to be a Chromecast with Google TV specific issue.